85006447 has 2 divisors, whose sum is σ = 85006448. Its totient is φ = 85006446.

The previous prime is 85006393. The next prime is 85006457. The reversal of 85006447 is 74460058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85006447 - 2¹¹ = 85004399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85006457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42503223 + 42503224.

It is an arithmetic number, because the mean of its divisors is an integer number (42503224).

Almost surely, 2^85006447 is an apocalyptic number.

85006447 is a deficient number, since it is larger than the sum of its proper divisors (1).

85006447 is an equidigital number, since it uses as much as digits as its factorization.

85006447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 85006447 is about 9219.8940883288. The cubic root of 85006447 is about 439.6940831547.

The spelling of 85006447 in words is "eighty-five million, six thousand, four hundred forty-seven".